I've recently gained access to a number of these pills, which contain .0194 mg Atropine,.1037 mg hyoscyamine, 16.2 mg phenobarbital, and .0065 mg scopolamine. I recognized the phenobarbital as a Barbituate, which is what caught my interest. I was worried, though, about the other drugs contained in each tablet, as I have never heard of any of them before. I was wondering if any of these other drugs have some sort of recreational value and/or pose a significant threat if taken in sufficient doses to achieve a phenobarbital high.

Phenobarbital really isn't that recreational. It might help with wd's but it won't give you any pleasant effects. Plus it builds up in your system over a long period of time and it takes a while before it reaches its peak. This one time I took a little too much pheno to fight the benzo wd's and I felt out of it for a day or 2 as if I drank way too much the night before.

I'd definitely recommend against it as well. Phenobarbital is one of the least recreational barbiturates, and as you increase the dose of it you'd start to see nasty effects from the other ingredients long before you felt anything, I'm expecting.